北京科技大学学报2011，Vol.33Issue(8)：952-957,6.
回火温度对Q960钢小角度晶界的影响
Effect of tempering temperature on low angle grain boundaries in Q960 steel
于浩 1张道达 2肖荣亭 1周平 3董杰吉 3杜显彬3
作者信息
- 1. 北京科技大学材料科学与工程学院,北京100083
- 2. 通裕重工股份有限公司,德州251200
- 3. 莱芜钢铁集团有限公司,莱芜271104
- 折叠
摘要
Abstract
A low-alloy high-strength steel Q960 for construction machinery was designed.Under the condition of homogeneous composition,homogeneous rolling and quenching techniques,a mechanism was researched to describe the influence of tempering temperature on low angle grain boundaries in Q960 steel.It is shown that with the rising of tempering temperature,the frequency of low angle grain boundaries as well as the tensile strength and yield strength of Q960 steel gradually decreases,but the tensile ratio increases.At different tempering temperatures,the peak value of the frequency of low angle grain boundaries is about at a misorientation of 5°,so the misorientation is small.Because of the small misorientation,the low angle grain boundaries are quite stable and the atomic mobility ratio is also very small.According to the calculation of bond order integrals（BOI）,B element can strengthen low angle grain boundaries in Q960 steel.关键词
高强钢/回火/晶界/位错/板条马氏体/取向差/力学性能Key words
high strength steel/tempering/grain boundaries/dislocations/lath martensite/misorientation/mechanical properties分类
金属材料引用本文复制引用
于浩,张道达,肖荣亭,周平,董杰吉,杜显彬..回火温度对Q960钢小角度晶界的影响[J].北京科技大学学报,2011,33(8):952-957,6.
